
People had a wide variety of experiences during lockdown. Some created businesses, others learned a new skill and still others moved from one couch to another without spilling their plate of nachos. All worthy endeavors. Then there’s Benjamin Choi, a 17-year-old high school junior who decided to build a prosthetic arm that could be controlled by brain waves. Choi started the extensive project in 2020 at the age of 15 using his sister's 3D printer. The idea for the prosthetic arm came from a feature on "60 Minutes" about a mind-controlled prosthetic arm, but for the arm to work it required surgery to implant sensors on the motor cortex of the user's brain.
Choi told Smithsonian Magazine, “I was really, really amazed at the time because this technology was so impressive. But I was also alarmed that they require this really risky open brain surgery. And they're so inaccessible, costing in the hundreds of thousands of dollars.”
The teen’s goal was to make the robotic limb affordable, making it more accessible. He also wanted to eliminate the need for a surgery that involves digging around in someone’s brain to get the prosthesis to work. Using his sister’s 3D printer for his first prototype was time consuming and required tedious work to connect the pieces as the printer could only print pieces 4.7 inches long. It took Choi 30 hours just to print the parts of the arm before using rubber bands and bolts to put it together. The prosthetic worked using head gestures and brain wave data.
Amazingly, the prosthetic arm wasn't Choi's first go at coding. He has been participating in robotics competitions since he was in elementary school, requiring him to not only build robots, but code them so they would move the way he wanted. He’s gone to the VEX Robotics World Championships several times and in 9th grade he taught himself computer programming languages C++ and Python by watching videos on Stack Overflow.
For now, the arm is mounted on a stand. Over the past two years, Choi has been working to perfect the arm before adding a socket, which he says will require a recipient to be custom fitted. The arm is currently on its 75th iteration. Choi is still able to maintain the affordability of the prosthetic, with manufacturing costs of around $300. Presently, a basic body-powered upper body prosthesis will run you around $7,000.
Choi works with volunteers to collect data and improve the functionality of the AI arm. The high schooler still has a way to go before the arm is complete and ready to be put on the market but that hasn’t stopped him from being recognized. He has won awards in the Microsoft Imagine Cup, the Regeneron International Science and Engineering Fair and the National At-Home STEM Competition. He is also a recipient of a manufacturing grant from polySpectra Inc., awarded in 2020 to help with the production of the arm. polySpectra produces durable 3D material.
Choi plans to attend college to study engineering and wants to continue working on his prosthetic arm, eventually bringing it to clinical trials. If he pulls this off, it could be life changing for the 2 million people in the United States that live with the loss of a limb.
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A Generation Jones teenager poses in her room.Image via Wikmedia Commons
An office kitchen.via
An angry man eating spaghetti.via 



An Irish woman went to the doctor for a routine eye exam. She left with bright neon green eyes.
It's not easy seeing green.
Did she get superpowers?
Going to the eye doctor can be a hassle and a pain. It's not just the routine issues and inconveniences that come along when making a doctor appointment, but sometimes the various devices being used to check your eyes' health feel invasive and uncomfortable. But at least at the end of the appointment, most of us don't look like we're turning into The Incredible Hulk. That wasn't the case for one Irish woman.
Photographer Margerita B. Wargola was just going in for a routine eye exam at the hospital but ended up leaving with her eyes a shocking, bright neon green.
At the doctor's office, the nurse practitioner was prepping Wargola for a test with a machine that Wargola had experienced before. Before the test started, Wargola presumed the nurse had dropped some saline into her eyes, as they were feeling dry. After she blinked, everything went yellow.
Wargola and the nurse initially panicked. Neither knew what was going on as Wargola suddenly had yellow vision and radioactive-looking green eyes. After the initial shock, both realized the issue: the nurse forgot to ask Wargola to remove her contact lenses before putting contrast drops in her eyes for the exam. Wargola and the nurse quickly removed the lenses from her eyes and washed them thoroughly with saline. Fortunately, Wargola's eyes were unharmed. Unfortunately, her contacts were permanently stained and she didn't bring a spare pair.
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Since she has poor vision, Wargola was forced to drive herself home after the eye exam wearing the neon-green contact lenses that make her look like a member of the Green Lantern Corps. She couldn't help but laugh at her predicament and recorded a video explaining it all on social media. Since then, her video has sparked a couple Reddit threads and collected a bunch of comments on Instagram:
“But the REAL question is: do you now have X-Ray vision?”
“You can just say you're a superhero.”
“I would make a few stops on the way home just to freak some people out!”
“I would have lived it up! Grab a coffee, do grocery shopping, walk around a shopping center.”
“This one would pair well with that girl who ate something with turmeric with her invisalign on and walked around Paris smiling at people with seemingly BRIGHT YELLOW TEETH.”
“I would save those for fancy special occasions! WOW!”
“Every time I'd stop I'd turn slowly and stare at the person in the car next to me.”
“Keep them. Tell people what to do. They’ll do your bidding.”
In a follow-up Instagram video, Wargola showed her followers that she was safe at home with normal eyes, showing that the damaged contact lenses were so stained that they turned the saline solution in her contacts case into a bright Gatorade yellow. She wasn't mad at the nurse and, in fact, plans on keeping the lenses to wear on St. Patrick's Day or some other special occasion.
While no harm was done and a good laugh was had, it's still best for doctors, nurses, and patients alike to double-check and ask or tell if contact lenses are being worn before each eye test. If not, there might be more than ultra-green eyes to worry about.